Warming drawer/user interface



FIG. 1 is a perspective view of a warming drawer with a user interface showing a first embodiment of our new ornamental design; and,

FIG. 2 is a perspective view of a warming drawer with a user interface showing a second embodiment of our new ornamental design.

The broken lines represent environment or structure of the warming drawer/user interface and form no part of the claimed design. 

The ornamental design for a warming drawer/user interface, as shown and described. 